iSMA-B-FCU /FCU Hardware
Version 1.1
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3.2 Digital Inputs
ISMA-B-FCU device is equipped with 4 Digital Inputs. The figure below presents the way they are
connected.
Figure 16 Connection of Digital Inputs Dry Contact
3.2.1 Digital Input fast counter
Digital Input can work as a counter of dry contact impulses up to 100 Hz. Counter value is saved
in non-volatile EEPROM memory.
WARNING! During Restore to Default process, the value of the counter is set to 0.